ASTM A563M chiyero chezvekuremerwa kwemaronda hexagon nziyo dzakagadziriswa neAmerican Society yekuedza uye zvigadzirwa (ASTM). Chiyero ichi chinonyanya kutsanangurwa zvinodiwa zvemakemikari, michina yezvimiro, zviyero zvemhando, kurapwa kwemusoro, nezvimwe.